<!DOCTYPE html>
<html>
<head>
    <title>登录 - Linux防护系统</title>
    <meta charset="utf-8">
    <style>
        body { font-family: Arial, sans-serif; margin: 40px; }
        .login-form {
            max-width: 300px;
            margin: 0 auto;
            padding: 20px;
            border: 1px solid #ddd;
            border-radius: 5px;
        }
        input[type="text"], input[type="password"] {
            width: 100%;
            padding: 8px;
            margin: 8px 0;
        }
        button {
            width: 100%;
            padding: 10px;
            background: #4CAF50;
            color: white;
            border: none;
            border-radius: 3px;
            cursor: pointer;
        }
    </style>
</head>
<body>
    <div class="login-form">
        <h2>Linux防护系统</h2>
        <form method="POST">
            <input type="text" name="username" placeholder="用户名" required>
            <input type="password" name="password" placeholder="密码" required>
            <button type="submit">登录</button>
        </form>
    </div>
</body>
</html> 